Blog

Notes on lower-carbon, smarter concrete

Practical explainers on embodied carbon, biochar admixtures, and aggregate quality, from the alterBiota team.

Jul 29, 2026 · Data centers

Low-carbon concrete for data centers, without over-relying on SCMs

Data center pours need deep embodied-carbon cuts and on-schedule strength. How ΔC works with Type IL and SCMs to hit aggressive targets without the finishability and schedule penalties of high-SCM mixes.

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Jul 22, 2026 · Standards

How ASTM C494 admixture qualification works

ASTM C494 Types A–G explained: what the tests measure, what third-party qualification proves, and why it de-risks adopting a new admixture like ΔC.

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Jul 22, 2026 · Carbon accounting

Biogenic carbon storage in concrete: how permanent is it?

Storing biogenic carbon in concrete only counts if it stays there. How biochar permanence works, how it differs from avoided emissions, and why it matters for carbon accounting.

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Jul 21, 2026 · Low-carbon concrete

Low-carbon concrete is painful for contractors. Here's a way out

High-SCM mixes decarbonize concrete but slow strength gain delays schedules and adds hidden cost. A liquid biochar admixture (ΔC) reaches higher decarbonization without impacting early strength or schedules.

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Jul 20, 2026 · Aggregate QC

Reducing rejected loads with real-time aggregate QC

Rejected and reworked loads quietly erode ready-mix margins. How higher-frequency aggregate quality control catches drift before it ships, and turns QC data into early warnings.

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Jul 18, 2026 · Aggregate QC

Inline vs mobile aggregate imaging: which fits your plant?

Mobile image analysis and inline plant hardware solve different problems. How to choose the right digitalΔggregate path for your operation, and why most plants end up using both.

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Jul 16, 2026 · Aggregate QC

Image-based aggregate gradation on any device

How smartphones and tablets turn aggregate QC into a five-minute task, and how digitalΔggregate converts photos into sieve-equivalent gradation plus shape and texture data.

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Jul 14, 2026 · Aggregate QC

Aggregate variability: why sparse sieving is not enough

Infrequent manual sieve tests miss the drift that actually moves concrete performance. Why aggregate shape and gradation matter, and what high-frequency characterization changes for QC.

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Jul 10, 2026 · Mix design

Sand Replacement vs Cement Replacement with ΔC

Two ways to design a lower-carbon mix with ΔC. How Sand Replacement and Cement Replacement differ in risk, GWP impact, and strength, and how to choose.

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